package com.qiaoba.module.log.aspect;


import cn.hutool.core.util.ObjectUtil;
import cn.hutool.core.util.StrUtil;
import cn.hutool.json.JSONUtil;
import com.qiaoba.api.log.annotation.Log;
import com.qiaoba.common.base.constant.BaseConstant;
import com.qiaoba.common.base.context.UserInfoContext;
import com.qiaoba.module.log.entity.SysLog;
import com.qiaoba.module.log.service.SysLogService;
import com.qiaoba.web.util.IpUtil;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.AfterThrowing;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.springframework.http.HttpMethod;
import org.springframework.stereotype.Component;
import org.springframework.validation.BindingResult;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.Collection;
import java.util.Date;
import java.util.Map;

/**
 * 操作日志记录切面
 *
 * @author ailanyin
 * @version 1.0
 * @date 1/31/23 4:23 PM
 */
@Aspect
@Component
@RequiredArgsConstructor
@Slf4j
public class LogAspect {

    private static final String METHOD_TEMPLATE = "{}.{}()";

    private final SysLogService sysLogService;
    private final HttpServletRequest request;

    private static ThreadLocal<Long> START_TIME = new ThreadLocal<>();

    @Before(value = "@annotation(controllerLog)")
    public void boBefore(JoinPoint joinPoint, Log controllerLog) {
        START_TIME.set(System.currentTimeMillis());
    }

    /**
     * 处理完请求后执行
     *
     * @param joinPoint 切点
     */
    @AfterReturning(pointcut = "@annotation(controllerLog)", returning = "jsonResult")
    public void doAfterReturning(JoinPoint joinPoint, Log controllerLog, Object jsonResult) {
        handleLog(joinPoint, controllerLog, null, jsonResult);
    }

    /**
     * 拦截异常操作
     *
     * @param joinPoint 切点
     * @param e         异常
     */
    @AfterThrowing(value = "@annotation(controllerLog)", throwing = "e")
    public void doAfterThrowing(JoinPoint joinPoint, Log controllerLog, Exception e) {
        handleLog(joinPoint, controllerLog, e, null);
    }

    private void handleLog(final JoinPoint joinPoint, Log controllerLog, final Exception e, Object jsonResult) {
        try {
            // *========数据库日志=========*//
            SysLog sysLog = new SysLog();
            sysLog.setStatus(BaseConstant.NORMAL);
            // 请求的地址
            String ip = IpUtil.getIp(request);
            sysLog.setIp(ip);
            sysLog.setOperationLocation(IpUtil.getIpAddr(ip));
            sysLog.setOperatorName(UserInfoContext.getUsername());
            sysLog.setUrl(request.getRequestURI());


            if (e != null) {
                sysLog.setStatus(BaseConstant.ABNORMAL);
                sysLog.setErrorMsg(StrUtil.sub(e.getMessage(), 0, 2000));
            }
            // 设置方法名称
            String className = joinPoint.getTarget().getClass().getName();
            String methodName = joinPoint.getSignature().getName();
            sysLog.setMethod(StrUtil.format(METHOD_TEMPLATE, className, methodName));
            // 设置请求方式
            sysLog.setRequestMethod(request.getMethod());
            sysLog.setOperationTime(new Date());
            // 处理设置注解上的参数
            getControllerMethodDescription(joinPoint, controllerLog, sysLog, jsonResult);
            // 设置消耗时间
            sysLog.setCostTime(System.currentTimeMillis() - START_TIME.get());
            // 保存数据库
            sysLogService.insert(sysLog);
        } catch (Exception exp) {
            // 记录本地异常日志
            log.error("==前置通知异常==");
            log.error("异常信息:{}", exp.getMessage());
            exp.printStackTrace();
        } finally {
            START_TIME.remove();
        }
    }

    /**
     * 获取注解中对方法的描述信息 用于Controller层注解
     *
     * @param log    日志
     * @param sysLog 操作日志
     * @throws Exception Exception
     */
    private void getControllerMethodDescription(JoinPoint joinPoint, Log log, SysLog sysLog, Object jsonResult) throws Exception {
        // 设置action动作
        sysLog.setBusinessType(log.businessType().ordinal());
        // 设置标题
        sysLog.setTitle(log.title());
        // 设置操作人类别
        sysLog.setOperatorType(log.operatorType().ordinal());
        // 是否需要保存request，参数和值
        if (log.isSaveRequestData()) {
            // 获取参数的信息，传入到数据库中。
            setRequestValue(joinPoint, sysLog);
        }
        // 是否需要保存response，参数和值
        if (log.isSaveResponseData() && ObjectUtil.isNotNull(jsonResult)) {
            sysLog.setJsonResult(JSONUtil.toJsonStr(jsonResult));
        }
    }

    /**
     * 获取请求的参数，放到log中
     *
     * @param sysLog 操作日志
     * @throws Exception 异常
     */
    private void setRequestValue(JoinPoint joinPoint, SysLog sysLog) throws Exception {
        String requestMethod = sysLog.getRequestMethod();
        if (!HttpMethod.GET.name().equals(requestMethod)) {
            String params = argsArrayToString(joinPoint.getArgs());
            sysLog.setOperationParam(params);
        }
    }

    /**
     * 参数拼装
     */
    private String argsArrayToString(Object[] paramsArray) {
        StringBuilder params = new StringBuilder();
        if (paramsArray != null && paramsArray.length > 0) {
            for (Object o : paramsArray) {
                if (ObjectUtil.isNotNull(o) && !isFilterObject(o)) {
                    String jsonObj = JSONUtil.toJsonStr(o);
                    params.append(jsonObj).append(" ");
                }
            }
        }
        return params.toString().trim();
    }

    /**
     * 判断是否需要过滤的对象。
     *
     * @param o 对象信息。
     * @return 如果是需要过滤的对象，则返回true；否则返回false。
     */
    @SuppressWarnings("rawtypes")
    private boolean isFilterObject(final Object o) {
        Class<?> clazz = o.getClass();
        if (clazz.isArray()) {
            return clazz.getComponentType().isAssignableFrom(MultipartFile.class);
        } else if (Collection.class.isAssignableFrom(clazz)) {
            Collection collection = (Collection) o;
            for (Object value : collection) {
                return value instanceof MultipartFile;
            }
        } else if (Map.class.isAssignableFrom(clazz)) {
            Map map = (Map) o;
            for (Object value : map.entrySet()) {
                Map.Entry entry = (Map.Entry) value;
                return entry.getValue() instanceof MultipartFile;
            }
        }
        return o instanceof MultipartFile || o instanceof HttpServletRequest || o instanceof HttpServletResponse
                || o instanceof BindingResult;
    }
}
